:root {
  color-scheme: light dark;
  --page-start: #e9f3ff;
  --page-end: #f7f2ff;
  --surface: rgb(255 255 255 / 88%);
  --surface-strong: #ffffff;
  --text: #152039;
  --muted: #526078;
  --accent: #2567d8;
  --accent-strong: #3f5ecc;
  --accent-soft: #dce9ff;
  --border: rgb(81 106 151 / 20%);
  --focus: #079fe8;
  --shadow: 0 24px 70px rgb(28 50 92 / 14%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --page-start: #101f46;
    --page-end: #050d20;
    --surface: rgb(17 26 42 / 88%);
    --surface-strong: #172132;
    --text: #e4eaf5;
    --muted: #bac5d8;
    --accent: #8cb4ff;
    --accent-strong: #50f6ed;
    --accent-soft: #24477a;
    --border: rgb(140 180 255 / 22%);
    --focus: #50f6ed;
    --shadow: 0 28px 80px rgb(0 0 0 / 30%);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  font-family: Inter, ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, sans-serif;
  line-height: 1.65;
  background: var(--page-end);
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 18% -10%, rgb(80 246 237 / 18%), transparent 32rem),
    linear-gradient(145deg, var(--page-start), var(--page-end) 72%);
  color: var(--text);
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 0.14em;
}

a:focus-visible {
  border-radius: 0.35rem;
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.site-header,
main,
.site-footer {
  width: min(100% - 2rem, 800px);
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.94rem;
}

nav a {
  color: var(--muted);
  font-weight: 650;
}

nav a[aria-current="page"] {
  color: var(--text);
  text-decoration-color: var(--accent-strong);
}

main {
  margin-block: 0.75rem 2.5rem;
  padding: clamp(1.5rem, 5vw, 3.5rem);
  border: 1px solid var(--border);
  border-radius: 2rem;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.eyebrow {
  margin: 0 0 0.6rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

h1,
h2 {
  line-height: 1.18;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 16ch;
  margin: 0 0 0.8rem;
  font-size: clamp(2.1rem, 7vw, 3.75rem);
}

h2 {
  margin: 2.4rem 0 0.65rem;
  font-size: 1.38rem;
}

p,
li {
  max-width: 68ch;
}

li + li {
  margin-top: 0.55rem;
}

code {
  padding: 0.08rem 0.35rem;
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  background: var(--accent-soft);
  color: var(--text);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.lede {
  margin-top: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.5vw, 1.2rem);
}

.meta {
  margin: -0.3rem 0 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
  margin-top: 2.2rem;
}

.card {
  display: grid;
  gap: 0.45rem;
  min-height: 12rem;
  padding: 1.4rem;
  border: 1px solid var(--border);
  border-radius: 1.35rem;
  background: var(--surface-strong);
  color: var(--text);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 16px 42px rgb(37 103 216 / 14%);
  transform: translateY(-2px);
}

.card strong {
  align-self: end;
  font-size: 1.15rem;
}

.card span:last-child {
  color: var(--muted);
  font-size: 0.95rem;
}

.card-icon {
  width: fit-content;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.privacy-note,
.notice {
  margin-top: 2rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent-strong);
  border-radius: 0 0.9rem 0.9rem 0;
  background: color-mix(in srgb, var(--accent-soft) 72%, transparent);
}

.button {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.75rem 1.15rem;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  color: #ffffff;
  font-weight: 750;
  text-decoration: none;
  box-shadow: 0 12px 30px rgb(37 103 216 / 22%);
}

@media (prefers-color-scheme: dark) {
  .button {
    color: #071426;
  }
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.75rem;
  padding-bottom: 2.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    border-radius: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}